red manuscript postmark with matching "25" rate on 1827 folded letter to Detroit, Michigan, datelined "Ouisconsin Portage, Sept 4th, 1827", very fine and historically-important, this letter took about 19 days to be carried privately down the Fox River to Green Bay where it entered the mails, written by John Kinzie (future Winnebago Indian Agent) it is the earliest historical account of the surrender of the famous warrior Red Bird, ex-Van Vlissingen and Risvold